Errata: In our first edition copy Figure 17 above was printed upside down.
We have corrected the page.
HAND - FORGING
with the hammer, driving the punch into the metal as far as it will go. The piece is then turned over, and a dark spot will be seen directly over the depression made by the punch. The punch
Fig. 16. Punching
is then set on this spot and given a few more blows with the hammer. (See Figs. 16 and 17.) The piece is now moved directly over the round
Fig. 17. Completing the Punch Hole
hole in the anvil and given a few blows with the hammer, driving out the burr. The hole is made as large as needed by driving the punch farther in. In punching heavy stock, it is necessary to cool